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Session Report

Summary:
Test run at: 2021-02-20 12:30:31 GMT
Client Prefix (v4): 168.196.178.x/24
Client AS (v4): 265466
IPv4 Probes: 66
Client Prefix (v6): 2804:3494:1xx::/40
Client AS (v6): 265466
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable rewrittenblocked
Largest spoofable neighbor prefix length none/64
Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.

Warnings:

IPv4 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (168.196.178.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
168.196.178.x/24/31265466rewritten
168.196.178.x/24/30265466rewritten
168.196.178.x/24/29265466rewritten
168.196.178.x/24/28265466rewritten
168.196.178.x/24/27265466rewritten
168.196.178.x/24/26265466rewritten
168.196.178.x/24/25265466rewritten
168.196.178.x/24/24265466rewritten
168.196.179.x/24/23265466rewritten
168.196.176.x/24/22265466rewritten
168.196.182.x/24/2153184rewritten
168.196.186.x/24/2010778rewritten
168.196.162.x/24/19265465rewritten
168.196.146.x/24/18263994rewritten
168.196.242.x/24/17264677rewritten
168.196.50.x/24/16265445rewritten
168.197.178.x/24/15265488rewritten
168.198.178.x/24/14UNROUTEDrewritten
168.192.178.x/24/13UNROUTEDrewritten
168.204.178.x/24/12UNROUTEDrewritten
168.212.178.x/24/1110430rewritten
168.228.178.x/24/10264926rewritten
168.132.178.x/24/918191rewritten
168.68.178.x/24/84152rewritten

Meaning of status in Received column:

rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
IPv6 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  
IPv6 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:48d0:101:501::242no
2001:4978:1fb:6400::d22001:48d0:101:501::242no
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fno
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2804:3494:1xx::/40/120265466yes
2804:3494:1xx::/40/112265466yes
2804:3494:1xx::/40/104265466yes
2804:3494:1xx::/40/96265466yes
2804:3494:1xx::/40/88265466yes
2804:3494:1xx::/40/80265466yes
2804:3494:1xx::/40/72265466yes
2804:3494:1xx::/40/64265466yes
2804:3494:1xx::/40/56265466no
2804:3494:1xx::/40/48265466no
2804:3494:1xx::/40/40265466no
2804:3494:81xx::/40/32265466no
2804:3414:1xx::/40/2428666no
2804:b494:1xx::/40/16UNROUTEDno

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.
Feedback:
We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.
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